vav control network installation and operation manual · 2 • vav control network i&o manual...

026-1200 Rev 1 06-APR-2010

VAV Control NetworkInstallation and Operation

Manual

1640 Airport Road, NW, Suite 104Kennesaw, GA 31044

Phone: 770-425-2724Fax: 770-425-9319

ALL RIGHTS RESERVED.

The information contained in this manual has been carefully checked and is believed to be accurate. However, Com-puter Process Controls, Inc. assumes no responsibility for any inaccuracies that may be contained herein. In no event will Computer Process Controls, Inc. be liable for any direct, indirect, special, incidental, or consequential damages resulting from any defect or omission in this manual, even if advised of the possibility of such damages. In the interest of continued product development, Computer Process Controls, Inc. reserves the right to make improvements to this manual, and the products described herein, at any time without notice or obligation.

CE/FCC Compliance Notice Information

Class A compliance for VAV Control Network under CE Requirements. Meets Part 15 Subpart B requirements of the FCC Rules. In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures.

UL Listed under UL916, file # E118489; UL873

READ ALL INSTRUCTIONS CAREFULLY

If the equipment is not used in the manner specified by the manufacturer, the protection provided by the equipment may be impaired.

Table of Contents1 OVERVIEW ................................................................................................................................................................... 1

1.1. VAV CONTROL NETWORK COMPONENTS.................................................................................................................... 21.1.1. Rooftop VAV (RTU-L) Controller (810-8002) ...................................................................................................... 21.1.2. Single-duct VAV Controller (810-8000) .............................................................................................................. 21.1.3. VAV Smart Thermostat (809-8000)....................................................................................................................... 31.1.4. AHU/Rooftop VAV controller Kit (810-8012) ...................................................................................................... 31.1.5. Single-duct VAV Box Kit (810-8010) .................................................................................................................... 4

2 MOUNTING................................................................................................................................................................... 5

2.1. THE ROOFTOP VAV CONTROLLER............................................................................................................................... 52.1.1. Rooftop VAV Environmental Ratings.................................................................................................................... 5

2.2. THE SINGLE-DUCT VAV CONTROLLER........................................................................................................................ 52.2.1. Single-duct VAV Environmental Ratings .............................................................................................................. 6

2.3. THE VAV SMART THERMOSTAT.................................................................................................................................. 62.3.1. VAV Smart Thermostat Mounting Conditions ...................................................................................................... 62.3.2. VAV Smart Thermostat Mounting Steps................................................................................................................ 72.3.3. VAV Smart Thermostat Environmental Ratings.................................................................................................... 7

3 POWERING ................................................................................................................................................................... 8

3.1. THE ROOFTOP VAV AND SINGLE-DUCT VAV CONTROLLERS .................................................................................... 83.1.1. Wire Types and Maximum Distances.................................................................................................................... 9

3.2. VAV SMART THERMOSTAT POWER WIRING .............................................................................................................. 9

4 INPUT WIRING .......................................................................................................................................................... 10

4.1. THE ROOFTOP VAV CONTROLLER............................................................................................................................. 104.1.1. Rooftop VAV Controller Input Configuration..................................................................................................... 104.1.2. Rooftop VAV Input Wiring .................................................................................................................................. 11

4.2. THE SINGLE-DUCT VAV CONTROLLER...................................................................................................................... 114.2.1. Single-duct VAV Input Configuration ................................................................................................................. 124.2.2. Single-duct VAV Input Wiring............................................................................................................................. 12

4.3. VAV SMART THERMOSTAT WIRING.......................................................................................................................... 134.3.1. Smart Thermostat Troubleshooting .................................................................................................................... 14

5 OUTPUT WIRING ...................................................................................................................................................... 15

5.1. THE ROOFTOP VAV CONTROLLER............................................................................................................................. 155.1.1. Output Fusing ..................................................................................................................................................... 155.1.2. Rooftop VAV Controller Output Configuration .................................................................................................. 155.1.3. Rooftop VAV Output Wiring ............................................................................................................................... 16

5.2. THE SINGLE-DUCT VAV ............................................................................................................................................ 165.2.1. Universal Output Fusing..................................................................................................................................... 175.2.2. Single-duct VAV Output Configuration .............................................................................................................. 175.2.3. Single-duct VAV Output Wiring.......................................................................................................................... 17

6 ECHELON NETWORK WIRING ............................................................................................................................ 18

6.1. WIRING TYPE.............................................................................................................................................................. 186.2. ECHELON NETWORK STRUCTURING (DAISY-CHAINS) ............................................................................................... 18

6.2.1. Maximum Number of Echelon Devices ............................................................................................................... 196.3. ECHELON WIRING....................................................................................................................................................... 19

6.3.1. Device Termination............................................................................................................................................ 19

Table of Contents • v

6.3.2. Using a Termination Block (P/N 535-2715) to Terminate a Daisy Chain.......................................................... 206.3.3. Maximum Total Segment Length......................................................................................................................... 20

7 OPEN ECHELON DEVICE CONNECTIVITY....................................................................................................... 21

7.1. ADDING ROOFTOP AND SINGLE-DUCT VAV CONTROLLERS...................................................................................... 217.2. COMMISSIONING THE ROOFTOP AND SINGLE-DUCT VAV CONTROLLERS ................................................................. 21

7.2.1. Service Pin Commissioning................................................................................................................................. 227.2.2. Neuron ID Entry Commissioning........................................................................................................................ 227.2.3. Troubleshooting .................................................................................................................................................. 22

8 E2 SETUP FOR THE ROOFTOP VAV CONTROLLER....................................................................................... 24

8.1. STATUS SCREEN.......................................................................................................................................................... 248.1.1. Inputs................................................................................................................................................................... 248.1.2. Outputs ................................................................................................................................................................ 24

8.2. GENERAL SETUP ......................................................................................................................................................... 248.3. SETPOINTS SETUP ....................................................................................................................................................... 258.4. INPUTS SETUP ............................................................................................................................................................. 258.5. OUTPUTS SETUP.......................................................................................................................................................... 258.6. AVERAGING SETUP ..................................................................................................................................................... 268.7. MISCELLANEOUS SETUP ............................................................................................................................................. 268.8. ALARMS SETUP........................................................................................................................................................... 268.9. PID SETUP .................................................................................................................................................................. 268.10. ADVANCED PARAMETER SETUP ............................................................................................................................... 27

9 TERMINAL LOAD CALCULATION FOR ROOFTOP VAV CONTROLLER ................................................. 28

9.1. ANALOG COMBINER SETUP: CALCULATE TERMINAL LOAD ...................................................................................... 28

10 E2 SETUP FOR THE SINGLE-DUCT VAV CONTROLLER............................................................................. 29

10.1. STATUS SCREEN........................................................................................................................................................ 2910.1.1. Inputs............................................................................................................................................................... 2910.1.2. Outputs ............................................................................................................................................................ 29

10.2. GENERAL SETUP ....................................................................................................................................................... 2910.3. TEMPERATURE SETPOINT SETUP .............................................................................................................................. 2910.4. INPUTS SETUP ........................................................................................................................................................... 3010.5. OUTPUTS SETUP........................................................................................................................................................ 3010.6. DEVICE SETUP .......................................................................................................................................................... 3010.7. PID SETUP ................................................................................................................................................................ 3110.8. ALARM SETUP........................................................................................................................................................... 3110.9. OVERRIDE SETUP...................................................................................................................................................... 3210.10. ADVANCED SETUP ................................................................................................................................................ 32

10.10.1. Max-Send Parameter Setup........................................................................................................................... 3210.10.2. Min-Send Parameter Setup ........................................................................................................................... 33

11 VAV SMART THERMOSTAT PROGRAMMING............................................................................................... 34

11.1. MENU HIERARCHY.................................................................................................................................................... 3511.2. BUTTON OPERATION................................................................................................................................................. 36

11.2.1. Overview.......................................................................................................................................................... 3611.2.2. Timeouts .......................................................................................................................................................... 3611.2.3. Sampling Rate ................................................................................................................................................. 36

11.3. STARTUP AND ERRORS ............................................................................................................................................. 3611.4. USER MODE .............................................................................................................................................................. 37

11.4.1. Button Functionality in User Mode................................................................................................................. 3711.4.2. LCD Text Definitions in User Mode ............................................................................................................... 37

11.4.2.1. RoomTemp - Read Only................................................................................................................................................. 37

vi • VAV Control Network I&O Manual 026-1200 Rev 1 06-APR-2010

11.4.2.2. Setpoint - Read-Only ...................................................................................................................................................... 3711.4.2.3. Cooling - Read-Only....................................................................................................................................................... 3811.4.2.4. Heating - Read-Only ....................................................................................................................................................... 3811.4.2.5. OccState - Read-Only ..................................................................................................................................................... 3811.4.2.6. Override - Read-Only ..................................................................................................................................................... 3811.4.2.7. OutdoorTemp - Read-Only ............................................................................................................................................. 38

11.5. CONFIGURATION MODE - PASSWORD PROTECTED................................................................................................... 3811.5.1. Button Functionality in Configuration Modes ................................................................................................ 3811.5.2. Entering Configuration Mode......................................................................................................................... 3811.5.3. Exiting Configuration Mode ........................................................................................................................... 3911.5.4. LCD Text Definitions for Configuration Mode............................................................................................... 39

11.5.4.1. Srvc Pin - Editable .......................................................................................................................................................... 3911.5.4.2. SI Units - Editable........................................................................................................................................................... 3911.5.4.3. Temp Cal - Editable ........................................................................................................................................................ 3911.5.4.4. IO State Submenu - Submenu Link ................................................................................................................................ 3911.5.4.5. VAV Mode - Editable..................................................................................................................................................... 3911.5.4.6. Flow Cfg Submenu - Submenu Link .............................................................................................................................. 3911.5.4.7. Flow Cal Submenu - Submenu Link............................................................................................................................... 39

11.5.5. I/O State Configuration Submenu - Display Text Definitions......................................................................... 4011.5.5.1. Trm Load - Read-Only ................................................................................................................................................... 4011.5.5.2. Input N - Read-Only ....................................................................................................................................................... 4011.5.5.3. Output N - Read-Only..................................................................................................................................................... 40

11.5.6. Flow Configuration Submenu ......................................................................................................................... 4011.5.6.1. Min Flow - Editable ........................................................................................................................................................ 4011.5.6.2. Max Flow - Editable ....................................................................................................................................................... 4011.5.6.3. MinFlwHt - Editable ....................................................................................................................................................... 4011.5.6.4. Nom Flow - Editable....................................................................................................................................................... 4011.5.6.5. DmpDrTm - Editable ...................................................................................................................................................... 4011.5.6.6. Open CCW - Editable ..................................................................................................................................................... 4011.5.6.7. Area - Editable ................................................................................................................................................................ 4011.5.6.8. PitotFct - Editable ........................................................................................................................................................... 40

11.5.7. Flow Calibration Submenu ............................................................................................................................. 4111.5.7.1. Flow - Read-Only ........................................................................................................................................................... 4111.5.7.2. RunNrmOp - Editable ..................................................................................................................................................... 4111.5.7.3. GotoMinF - Editable ....................................................................................................................................................... 4111.5.7.4. GotoMaxF - Editable ...................................................................................................................................................... 4111.5.7.5. Dmp Cmd - Editable ....................................................................................................................................................... 4111.5.7.6. Dmp Pos - Read-Only..................................................................................................................................................... 4111.5.7.7. DifPress - Read-Only...................................................................................................................................................... 4111.5.7.8. CalLoVal - Editable ........................................................................................................................................................ 4111.5.7.9. CalHiVal - Editable ........................................................................................................................................................ 4111.5.7.10. High and Low Manual Calibration Example ............................................................................................................... 4211.5.7.11. CalToMin - Editable ..................................................................................................................................................... 4211.5.7.12. CalToMax - Editable .................................................................................................................................................... 4211.5.7.13. DoAutoCal - Editable ................................................................................................................................................... 4211.5.7.14. NOT CALIBRAT - Read Only..................................................................................................................................... 42

12 HARDWARE SPECIFICATIONS .......................................................................................................................... 43

12.1. ROOFTOP VAV CONTROLLER .................................................................................................................................. 4312.2. SINGLE-DUCT VAV CONTROLLER ........................................................................................................................... 4512.3. VAV SMART THERMOSTAT...................................................................................................................................... 46

INDEX............................................................................................................................................................................. 47

Table of Contents • vii

1 Overview

Retail Solutions offers a VAV (variable-air vol-ume) control option as part of the E2 line of facility controllers. The VAV Control Network provides a complete building energy control and conservation solution for HVAC systems using VAV components.

The VAV Control Network comprises the Rooftop VAV controller, Single-duct VAV controllers (air damper control), and VAV Smart Thermostats to sup-ply a variable amount of conditioned airflow to dif-ferent zones of a building. The VAV Smart Thermostat allows the user to view adjustments to environmental settings.

All controllers in the VAV Control Network com-municate with the E2 BX Building and CX Control-lers on the E2 Echelon Network (Figure 1-1).

Figure 1-1 - VAV Control Network - Daisy Chain

E2 BXController

Rooftop VAVController

Single-ductVAV

ControllerVAV SmartThermostat

Overview • 1

1.1. VAV Control Network Components

1.1.1. Rooftop VAV (RTU-L) Control-ler (810-8002)

The Rooftop VAV controller is a microprocessor-based discharge air controller designed to control any rooftop unit application. The Rooftop VAV controls up to 4 total stages of heating and cooling, VFD fan, humidification and dehumidification, economization, and more.

The Rooftop VAV comes with 6 pre-defined inputs and 7 pre-defined outputs. Inputs include static pressure, fan proof, outdoor, return, supply, and mixed temperature. 5 triac outputs (PWM or digital) include fan run, 0-10VDC economizer, 0-10VDC Fan, 2 cool, and 2 heat stages.

The Rooftop VAV controller’s role in the VAV Control Network is to coordinate all Single-duct con-trollers associated with the Rooftop VAV controller. The Single-duct VAV reports its terminal load back to the E2 controller, and the E2 sends the demand averaging back to its connected Rooftop VAV con-troller.

1.1.2. Single-duct VAV Controller (810-8000)

The Single-duct VAV controller is designed to control all aspects of a single zone or room, including heating and cooling, fans, duct heaters, and air damp-ers. The Single-duct VAV controller features 4 pre-defined temperature sensor inputs and 6 pre-defined outputs (4 digital and 2 universal).

Digital outputs are triacs rated at 0.75 amps, 24VAC. Universal outputs are either 0-10VDC, 0-12VDC, or PWM 20MA max.

The controller uses the LonWorks® network by Echelon® for communication with E2 BX Building and CX Controllers.

Figure 1-2 - The Rooftop VAV Controller

Figure 1-3 - Single-duct VAV Controller

Figure 1-4 - Single-duct VAV Controller (Diagram)

Opening for DamperShaft

Mechanical Stops

Connectors

IntegratedMountingBrackets

Service Pin

Pressure Sensor Inputs

Actuator Clutchfor ManualAdjustment

2 • VAV Control Network I&O Manual 026-1200 Rev 1 06-APR-2010

1.1.3. VAV Smart Thermostat (809-8000)

The VAV Smart Thermostat is an advanced LCD sensor specifically designed to interface with the Sin-gle-duct VAV controller. This device provides preci-sion local temperature sensing and provides a variety of public functions that can be accessed by room occupants, as well as password-protected functions for technicians.

Occupants have access to a user-friendly interface for viewing environmental settings and adjusting them to their liking. Building occupants can also view occupancy status, space temperature, outside air temperature, and view the setpoint.

Maintenance personnel have access to a pass-word-protected configuration mode that allows them to perform air balancing on a connected Single-duct VAV controller, view input and output values for the

connected Single-duct VAV.

The VAV Smart Thermostat may either be mounted in a room or used by technicians as a hand-held air balancing tool.

1.1.4. AHU/Rooftop VAV controller Kit (810-8012)

Figure 1-5 - VAV Smart Thermostat

AHU/Rooftop VAV Controller Kit Components

Quantity Description

1 Rooftop VAV Controller (810-8001)

1 Transformer (640-0056)

3 Return, Supply, and Mixed Tem-perature Sensors (201-2112)

1 Outdoor Air Temperature Sensor(501-1121)

1 Veris PXU LX05S Static Pressure Transducer

2 Kele A-302-K Pilot Tube

2 Kele A-345-K Flange

1 Kele RPS Cover

1 Single Gang Box

1 20’ – Kele T-101 Tubing

1 Kele B-376 T-barb

Table 1-1 - AHU/Rooftop VAV controller Kit Components

VAV Control Network Components Overview • 3

1.1.5. Single-duct VAV Box Kit (810-8010)

Single-duct VAV Box Kit Components

Quantity Description

1 Single-duct VAV Controller (810-8000)

1 VAV Smart Thermostat (809-8000)

1 Transformer (640-0056)

1 Flow Sensor (202-5005)5.4 inch insertion

1 10’ Kele T-101 (Sample Tube)

Table 1-2 - Single-duct VAV Kit Components


2 Mounting

2.1. The Rooftop VAV Control-ler

The Rooftop VAV is designed to be mounted within or near the rooftop unit, either on a DIN rail or to a wall or panel using the mounting holes as shown in Figure 2-1.

2.1.1. Rooftop VAV Environmental Ratings

The controller is designed to operate under the following environmental conditions:

• Ambient temperature from 32°F to 158°F (0°C to 70°C).

• Relative humidity from 0-90% non-condensing.

2.2. The Single-duct VAV Con-troller

The Single-duct VAV Controller is designed to be mounted on a damper shaft, fastened either against the side of the air duct or in a panel. The integrated mounting brackets on the right side of the controller have a hole diameter of 0.2” (5 mm) and are designed to oppose shaft torque.

1. Mount the controller over the damper shaft, and use the controller mounting brackets to mark the location of any holes that need to be drilled.

2. Remove the controller and drill the necessary holes.

Figure 2-1 - Rooftop VAV Dimensions

2.0” (5.1 cm)

RTU Side View

RTU Front View

5.7” (14.5 cm)

4.25” (10.8 cm)

4.7

” (1

1.9

cm

)

2.25” (5.7 cm)

Figure 2-2 - Single-duct VAV Controller Dimensions

Figure 2-3 - Single-duct VAV Damper Shaft Mounting Diagram

2.36” (6 cm) 0.83”

(2.1 cm)

2.56” (6.5 cm)

1.28”(3.25 cm) 7.15” (18.2 cm)

4.94” (12.5 cm)

0.59” (1.5 cm)

0.75” (1.9 cm)

4.83” (12.3 cm)

0.67”(1.7 cm)

VAV Bottom View

VAV Front View 1.42” (3.6 cm)

The Rooftop VAV Controller Mounting • 5

3. Clean the surface.

4. Re-mount the controller on the damper shaft, and fasten the controller using the appropri-ate screw types.

5. Ensure the damper shaft is at least 1.5” (4 cm) long to allow the damper bracket to fit securely around the damper shaft. If required, limit the maximum damper shaft rotation by modifying the position of the mechanical stops in 5° increments.

6. Connect the high and low pressure sensors with 1/4” (6.4 mm) outside diameter, 5/32” (4 mm) inside diameter flexible tubing.

Allow for proper clearance of controller enclo-sure, wiring terminals and service pin for easy access, hardware configuration, and maintenance. Remember to record the Neuron® ID located on the side of the controller (in text and barcode format) for later commissioning.

Ensure proper ventilation of controller and avoid areas where corroding, deteriorating or explosive vapors, fumes, or gases may be present. The control-ler must be oriented with the ventilation slots towards the top to permit proper heat dissipation.

2.2.1. Single-duct VAV Environmen-tal Ratings

The VAV controller is designed to operate under the following environmental conditions:


• Relative humidity from 0-90% non-condensing.

2.3. The VAV Smart Thermo-stat

The VAV Smart Thermostat is designed to be mounted on a wall in the space controlled by its asso-ciated Single-duct VAV controller. Choose a location on the wall that is 4 to 6 feet above floor level that is away from any external source of heat, cool, humid-ity, or excess air flow.

2.3.1. VAV Smart Thermostat Mounting Conditions

The VAV Smart Thermostat has been designed for easy installation; however, certain conditions apply when choosing a suitable location for the device:

• The device should not be installed on an exteri-or wall.

• The device should not be installed near a heat source.

• The device should not be installed near an air discharge grill.

• The device should not be installed in a place where it can be affected by the sun.

• Install the device in an area that provides proper device ventilation.

• Nothing must restrict air circulation to the de-vice.

Figure 2-4 - VAV Smart Thermostat Dimensions

4.94"(12.5 cm)

3.38"(8.6 cm)

1.28" (3.25 cm)


2.3.2. VAV Smart Thermostat Mounting Steps

Before mounting, detach the VAV Smart Thermo-stat from the rear mounting plate by pushing down on the release tabs (4 total) on the top or bottom of the mounting plate. Use the holes in the mounting plate to fasten it to the wall, and use the large hole in the middle of the plate to run wiring through the wall to the VAV Smart Thermostat.

1. Make sure that the mounting surface is flat and clean.

2. Remove the security screw from the device (Figure 2-5).

3. Open the device by pressing in the two (2) tabs on the bottom of the device and pulling the bottom side of the front plate out.

4. Flip the printed circuit board over to access the mounting hole.

5. Pull all cables 6” (15.24 cm) out of the wall, and insert them through the central hole of the back plate.

6. Align the back plate with the wall and mark the location of the two mounting holes on the wall. Make sure to orient the proper side of

the back plate facing upwards.

7. Remove the back plate and drill holes in the wall if necessary.

8. Install anchors in the wall if necessary.

9. Screw the back plate onto the wall. Do not over tighten.

10. Strip each wire ¼” (6.35 mm) and insert each one according to the wiring diagrams shown in this document.

11. Gently push excess wiring back into the wall.

12. Flip the printed circuit board back into place.

13. When finished, re-attach the VAV Smart Thermostat front plate by snapping it into the mounting plate. Verify that it clips tightly into place.

14. Install security screw.

2.3.3. VAV Smart Thermostat Envi-ronmental Ratings

The controller is designed to operate under the following environmental conditions:


• Relative humidity from 0-90% non-condens-ing.

CAUTION: The VAV Smart Thermostat is not designed for outdoor use.

Figure 2-5 - VAV Smart Thermostat Mounting - Device Components

Flip printed circuitboard to access mounting hole

Security screw

Pull on plastic tabto release the printed circuitboard

Wall anchors

tabsRelease

tabRelease

The VAV Smart Thermostat Mounting • 7

3 Powering

3.1. The Rooftop VAV and Sin-gle-duct VAV Controllers

The Rooftop VAV and Single-duct VAV control-lers both require 24VAC ± 15%, Class 2 power from a non-center-tapped transformer. Table 3-1 lists all non-center-tapped transformers supplied by Retail Solutions.

When using 640-0056 and 640-0080 multi-tap transformers, leave the center tap on the secondary side unconnected, as shown in Figure 3-1.

A transformer may power multiple Rooftop VAVs or Single-duct VAVs. Table 3-2 shows the maximum power consumption of the Rooftop VAV or Single-duct VAV controllers. To determine how many con-

trollers may be powered by a single transformer, add together the VA ratings of each controller you wish to connect, and multiply by 1.3. If the resulting VA total is higher than the VA rating of the transformer, you will either need to use a larger transformer or power some of the controllers using a second transformer.

Maintain consistent polarity when connecting controllers and devices to the transformer. That is, the COM terminal of each controller and each peripheral should be connected to the same terminal on the secondary side of the transformer.

Xformer P/N

VA Rating

Primary Voltage

Center Tap?

640-0041 50 VA 110 VAC No

640-0042 50 VA 220 VAC No

640-0056 56 VA Multi-tap (120/208/240 VAC)

Yes

640-0050 75 VA 110 VAC No

640-0045 75 VA 220 VAC No

640-0080 80 VA Multi-tap (120/208/240 VAC)

Yes

Table 3-1 - Transformer Part Numbers

Figure 3-1 - Rooftop VAV and Single-duct VAV Power Wiring to Multi-Tap Transformer

PRIMARY SIDE SECONDARY SIDE

240 208C

120

BLU

E(N

EU

TR

AL)

BR

OW

N(H

OT

)

120/208/240 VAC

24V CT 24V

Controller 1

24VAC

COM

Controller 2

24VAC

COM

24VAC

COM

TO OTHERRTUs AND

VAVs

ControllerMax Power

Consumption(VA)

Rooftop VAV 18 VA

Single-duct VAV 10 VA

Table 3-2 - Controller VA Ratings

CAUTION: The controllers are half-wave rectified. Connecting two half-wave power supplies to the same transformer without

maintaining polarity will cause a short circuit.

CAUTION: The COM terminals of the controller are internally wired to the 24V COM terminal of the power supply; there-

fore, if powering peripherals and controllers with the same transformer, it is essential to maintain polarity. Failure to do so will result in a short cir-cuit and/or a damaged controller.


3.1.1. Wire Types and Maximum Dis-tances

For powering Rooftop VAV and Single-duct VAV controllers, use two-conductor non-shielded cables for connecting between the transformer and the con-trollers. Shielded cable should not be used for power wiring. The center tap should be wired with the third conductor to earth ground at the transformer.

The wire length from the transformer and the number of boards connected to the same wire deter-mines the type wire gauge used. In most cases, the distance between the controllers and the transformer that supplies power to them is not enough to be of concerned. But it is very important not exceed this maximum wire length or the controllers will mal-function.

Use these formulas to determine if the wire gauge you are using fits within specification:

3.2. VAV Smart Thermostat Power Wiring

The VAV Smart Thermostat receives its required power (12VDC) through its connection to the Single-duct VAV controller. Refer to Section 4.3., VAV Smart Thermostat Wiring, for VAV Smart Thermostat connection information.

Figure 3-2 - Single-duct VAV Layout

14 AWG:

Feet = 0.40/(VA/24) x 0.005

18 AWG:

Feet = 0.40/(VA/24) x 0.013

(VA is the total VA rating of the controllers)

For example, if you had an 80 VA load:

14 AWG: 24 ft. (rounded down)

18 AWG: 9 ft.

Figure 3-3 - Power Wire Lengths

VAV Smart Thermostat Power Wiring Powering • 9

4 Input Wiring


The Rooftop VAV has six (6) pre-configured inputs (labeled UI1 through UI6). The inputs support 10k thermistors, 1k Platinum RTDs, Platinum PT100s, digital dry contacts, and 0 to 10VDC inputs.

Wire the signal side of the sensor or input device to the appropriately numbered UI terminal as shown in Figure 4-1. Wire the other side to the COM termi-nal nearest to the UI terminal you are using (every two UI inputs shares a COM terminal).

4.1.1. Rooftop VAV Controller Input Configuration

Figure 4-1 - Rooftop VAV Input Locations

UNIVERSAL INPUTS (6)

RTU CONTROLLER

EC-RTU-L

1 2 3 4 5 6 7 8 9 10 11

UI1

CO

M

UI2

UI3

LON

1

LON

2

LONPORT

45678910

24V

AC

/DC

24V

CO

M

123

DO

1

DO

2

C2

C1

DO

3

DO

4

C4

C3

DO

5

UO

6

CO

MC5

UO

7

1112131415

CO

M

UI4

UI5

CO

M

UI6

NTC Thermistor10kand PlatimumRTDs (1k and PT100

UIxCOM

DigitalDryContactNO-NC

UIxCOM

UIxCOM

0-10V +-24VAC

Common24VAC

0-10VDCVoltageInputs

Rooftop VAV Inputs

Input Number

Input Name

Description

1 UI1 Outside Temperature

2 COM Common

3 UI2 Return Temperature

4 UI3 Supply Temperature

5 COM Common

6 UI4 Mixed Air Temperature

7 UI5 Duct Pressure (INW)

8 COM Common

9 UI6 Fan Proof

10 LON1 Echelon

11 LON2 Echelon

Table 4-1 - Rooftop VAV Inputs


4.1.2. Rooftop VAV Input Wiring

4.2. The Single-duct VAV Con-troller

The Single-duct has four pre-configured inputs (labeled UI1 through UI4). The inputs support 10k thermistors, 1k Platinum RTDs, Platinum PT100s, 10k potentiometers, digital dry contacts, 4-20 mA current inputs, and 0-10VDC inputs.

Wire the signal side of the sensor or input device to the appropriately numbered UI terminal as shown in Figure 4-3. Wire the other side to the COM termi-nal. All four inputs share the same common terminal (COM).

Figure 4-2 - Rooftop VAV Input Wiring

ZERO

CAUTION: Proof pressure 3psi(20.6kPa)

Differential Pressure Transmitter

RTU-LINPUT SIDE

OATRETURN

AIR

SUPPLYAIR

AIRMIXED

WHITE

WHITE

WHITE

WHITE

BELDEN 8771 22AWG / 3C

WHITE

BLACK

RED

I/V OUTPUT

GROUND

24VACWHITE

WHITE

BLU

BLU

WHITE

FAN PROOF

ECHELON

ECHELON

(DUCT PRESSURE)PRESSURE TRANSMITTER

24VAC

SHIELD

1

UI1

2

COM

UI23

UI34

5

COM

UI4

6

UI5

7

COM

89

UI6

LON1

LON2

10

11

Figure 4-3 - Single-duct VAV Input Locations

NTC Thermistor10kand PlatimumRTDs (1k and PT100

UIxCOM

SMRT-

SMRT+

UI4

UI3

COM

UI2

UI1

LON2

LON1

UO6

COM

UO5

DO4

C3-4

DO3

DO2

C1-2

DO1

UNIVERSALINPUTS

(4)

The Single-duct VAV Controller Input Wiring • 11

4.2.1. Single-duct VAV Input Config-uration

4.2.2. Single-duct VAV Input Wiring

Single-duct VAV Outputs

Input Number

Input Name

Description

2 LON2Echelon

1 LON1

2 SMRT -Smart Thermostat

1 SMRT +

5 UI4 Temperature Monitor-ing (optional)


3 COM Common for Tempera-ture Sensors


1 UI1 Discharge Temp Sensor

Table 4-2 - Single-duct VAV Inputs

Figure 4-4 - Single-duct VAV Input Wiring

SMRT-

LON

LON

I4

I1

GND

AO2

1

2

1

2

3

4

5

2

3

1

2

T2T1

CONNECTORS

+-

SMART THERMOSTAT

BLK

WHITE GREEN

GREEN

TO OTHER ECHELON DEVICES

TO OTHER ECHELON DEVICESWHITE

WHITE

BLUE

BLUE

SHIELDLON2

LON1

SMRT -

SMRT +

COM

UI3

UI2

UI4

UI1

TEMPERATURE SENSOR

INPUT SIDE

Use Belden 8641 (or equiv.) for both the Smart Thermostat and Discharge Temperature Sensor


4.3. VAV Smart Thermostat Wiring

If a VAV Smart Thermostat is being used, connect the T1 and T2 terminals on the VAV Smart Thermo-stat circuit board sensor to the SMRT+ and SMRT- terminals on the Single-duct VAV, as shown in Fig-ure 4-5. Use Belden 8641 cable or equivalent (two-conductor, shielded) to make the connection.

Figure 4-5 - VAV Smart Thermostat Connection to Single-duct VAV

SMRT-

SMRT+

UI4

UI3

COM

UI2

UI1

LON2

LON1

UO6

COM

UO5

DO4

C3-4

DO3

DO2

C1-2

DO1

SMARTSENSOR

TERMINALS

T1T2

BLA

CK

WH

ITE

BLACK

WHITE

SMARTSENSOR

VAV Smart Thermostat Wiring Input Wiring • 13

4.3.1. Smart Thermostat Troubleshooting

VAV Smart Thermostat Screen Is Blank

Is the thermostat connected to the controller?

Verify that the thermostat is connected to the controller and that no wires have come loose from the input terminals.

Is power being supplied to the controller?

Power may not be supplied from the controller. Check if the controller has power or if the controller’s internal fuses have blown or tripped.

Device Not Communicating With Controller

Is the polarity of the VAV Smart Thermostat connec-tion to the controller incor-rect?

Verify that the device is wired to the controller with the correct polarity. T1 must be connected to SMRT+ and T2 to SMRT-.

Is the device too far from the controller?

Verify the distance between the device and the controller. The wiring length should be less than 50ft.

Table 4-3 - VAV Smart Thermostat Troubleshooting


5 Output Wiring


The Rooftop VAV has seven (7) pre-configured outputs: five (5) digital outputs and two (2) universal outputs, the locations of which are shown in Figure 5-1.

Table 5-1 shows the maximum current ratings for the Rooftop VAV outputs.

5.1.1. Output FusingThe universal outputs UO6 through UO7 are pro-

tected by an auto-reset fuse with a max current capacity defined by the following two points:

• 100 mA @ 68°F (20°C)• 60 mA @ 140°F (60°C)

5.1.2. Rooftop VAV Controller Out-put Configuration

Figure 5-1 - Rooftop VAV Output Locations and Wiring

Rooftop VAV Controller Outputs

Output Ratings

Digital Outputs(DO1-DO5)

Universal Outputs (UO6-UO7)

Triac 24VAC, 1.0A maxExternal power supply

0 to 10VDC (linear/ana-log), 60mA max

Table 5-1 - Rooftop VAV Output Ratings

DOxCx

DIGITAL OUTPUTS

24VACTriac(max current1A @ 24VAC)

ANALOG OUTPUTS

OUTPUTS (7)

RTU CONTROLLER

EC-RTU-L

1 2 3 4 5 6 7 8 9 10 11

UI1

CO

M

UI2

UI3

LON

1

LON

2

LONPORT

45678910

24V

AC

/DC

24V

CO

M

123

DO

1

DO

2

C2

C1

DO

3

DO

4

C4

C3

DO

5

UO

6

CO

MC5

UO

7

1112131415

CO

M

UI4

UI5

CO

M

UI6

DOxCx

24VAC Relay

AC

A2

A1

UOx

COM

0 to 10VDC

Common

Economizer and VSD

Rooftop VAV Outputs

Output Number

Output Name

Description

15 24VAC/DC24VAC

14 24V COM

13 DO1Fan

12 C1

11 DO2Cool 1

10 C2

9 DO3Cool 2

8 C3

7 DO4Heat 1

6 C4

5 DO5Heat 2

4 C5

3 UO6 Economizer

2 COM Common

1 UO7 VFD Fan

Table 5-2 - Rooftop VAV Outputs

The Rooftop VAV Controller Output Wiring • 15

5.1.3. Rooftop VAV Output Wiring

5.2. The Single-duct VAVThe Single-duct VAV has six (6) outputs: four (4)

digital outputs and two (2) universal outputs, the locations of which are shown in Figure 5-3. The function of each output comes pre-configured.

Each pair of digital outputs has a four-pin jumper that must be set with a jumper across the two center

pins as shown in Figure 5-3 and Figure 5-4.

Figure 5-2 - Rooftop VAV Output Wiring

S1

S2 ( + ) VFD (0-10V)

(FAN)

(COOL 1)

(COOL 2)

(HEAT 1)

EC2

EC1

( + ) ECONOMIZER (4-20mA)

( - ) ECONOMIZER

( - ) VFD

Y1

Y2

W1

W2

G

R

(HEAT 2)

RTU-LOUTPUT SIDE

TRANSFORMER

18 AWG / 8C

(CPC/EMR# 640-0056)

24VAC

WIRE TYPE AND SIZE PER NEC

BELDEN 8761 22AWG / 2C

GRN

RED

WHT

BRN

YEL

BLU

BLKBLKWHT

24VAC/DC

24V COM

DO1

C1

DO2

C2

DO3

C3

DO4

C4

DO5

C5

UO6

COM

UO7

12

34

56

78

91

011

12

1314

15

24VAC

Figure 5-3 - Single-duct VAV Output Locations and Wiring

Dry contact inputDOx

Cx

DOxCx

DIGITAL OUTPUTS

24VACTriac(max current1A @ 24VAC)

SMRT-

SMRT+

UI4

UI3

COM

UI2

UI1

LON2

LON1

UO6

COM

UO5

DO4

C3-4

DO3

DO2

C1-2

DO1

DIGITALOUTPUTS

(4)

UNIVERSALOUTPUTS

(2) JUMPERSETTINGS

JUMPERSETTINGS


5.2.1. Universal Output FusingThe universal outputs UO5 and UO6 are pro-

tected by an auto-reset fuse with a max current capacity defined by the following two points:

• 100 mA @ 68°F (20°C)• 60 mA @ 140°F (60°C)

5.2.2. Single-duct VAV Output Con-figuration

5.2.3. Single-duct VAV Output Wiring

Single-duct VAV Controller Outputs

Output Ratings

Digital Outputs(DO1-DO4)

Universal Outputs (UO5-UO6)

Triac 24VAC, 0.75A max. External or inter-nal power supply.

0 to 10VDC (linear/ana-log), digital 0 or 12VDC, PWM 20mA max.Maximum load 600

Table 5-3 - Single-duct VAV Output Ratings

Single-duct VAV Outputs

Output Number

Output Name

Description

3 UO6

N/A2 COM

1 UO5

6 DO4 Heat 4

5 C3-4 Common

4 DO3 Heat 3

3 DO2 Heat 2

2 C1-2 Common

1 DO1 Heat 1

2 24 VAC24VAC

1 24V COM

Table 5-4 - Single-duct VAV Outputs

Figure 5-4 - Single-duct VAV Output Wiring

24VAC

1

2

3

4

5

6

1

2

(HEAT STAGE 2)

(HEAT STAGE 1)

DO4

C3-4

DO3

C1-2

DO2

DO1

24 VAC

24V COM

OUTPUTSIDE

Wire type and size per NEC

Heating outputs to be utilized/wired where required

24VAC TRANSFORMER (use multi-tap

transformersP/N 640-0056)

J12

J11

Before power is applied to the outputs, verify that jumpers J11 and J12 for outputs DO1 - DO4 are jumpered on the middle pin.

.

CAUTION! If power is applied with the jumpers in the wrong position,damage to the board could result

Single-duct VAV

The Single-duct VAV Output Wiring • 17

6 Echelon Network Wiring

The Echelon® LonWorks® network, commonly called “the Echelon network,” is a two-conductor network that interconnects E2s and other Echelon associated devices. All Echelon devices are wired together using the daisy-chain method of network structuring.

The Echelon network is used by the Rooftop VAV and Single-duct VAV controllers for two purposes: to communicate with each other (for demand averaging and other purposes), and to communicate with the E2 BX Building and CX Controllers.

Note: For more information about Echelon networks and the E2 controller, refer to the E2 User’s Guide (P/N 026-1610), available from Emerson Climate Technologies Retail Solutions.

6.1. Wiring TypeRetail Solutions specifies one type of cable for Echelon Network wiring. This cable type’s properties are

listed in Table 6-1.

6.2. Echelon Network Struc-turing (Daisy-Chains)

Echelon devices are networked together into con-figurations called segments. A segment is a group of up to 64 Echelon devices that are connected together on an unbroken series of wires.

The recommended way of constructing an Eche-lon Network is called daisy-chaining. In the daisy-chain network configuration, devices are arranged by subnets, which consist of one E2 and all Echelon devices associated with the E2. All devices in a sub-net are connected in an unbroken chain without branches or “star configurations” (see Figure 6-1).

If more than one E2 is present on-site and Eche-lon is being used as the E2 peer-to-peer network, all chains are connected so that the entire network forms a large unbroken chain. This allows for all devices in the Echelon Network to be hard wired together for trouble-free communication.

Cable Type Level 4, twisted pair, stranded, shielded

Wire Diam./AWG 0.65mm/22AWG

Loop Resistance 106(ohms/km)

Capacitance 49(nF/km)

Table 6-1 - Echelon Network Cable Specifications

Cable Type Part Number

1 pair, non-plenum 135-2300

1 pair, plenum 135-2301

Table 6-2 - Recommended Wiring


6.2.1. Maximum Number of Echelon Devices

A daisy-chained segment may contain no more than 63 total Echelon devices (also called “nodes”). If Echelon is being used as the E2 peer-to-peer net-work and the total number of Echelon devices on-site exceeds 63, routers will need to be used to separate subnets in between E2 controllers. Refer to P/N 026-1610, E2 User’s Guide, for more information on routers and using Echelon for peer-to-peer network-ing.

6.3. Echelon Wiring

Connect the Rooftop and Single-duct VAV con-trollers to the Echelon network segment using the two-terminal Echelon (LON) connector, as shown in Figure 6-2. Tie the shield wires together at each break in the cable, and connect the shields to a solid earth ground.

6.3.1. Device TerminationIn a daisy-chain configuration, both ends of the

network segment must be terminated. Terminate the E2 by setting jumper JP7 to the UP position, as shown in Figure 6-3. If a Rooftop VAV or Single-duct VAV controller is at the end of a LON network, use a 102-ohm “terminator block” at the end of the network segment (see Section 6.3.2., Using a Termi-nation Block (P/N 535-2715) to Terminate a Daisy Chain).

All other E2s and Echelon devices that aren’t at the end of a daisy-chained network segment must be unterminated.

Figure 6-1 - Echelon Wiring - Subnets

E2 E2

E226513125rev

RECOMMENDED

UNBROKEN CHAIN

Figure 6-2 - Rooftop and Single-duct VAV Echelon Wiring Diagram

SMRT-

SMRT+

UI4

UI3

COM

UI2

UI1

LON2

LON1

UO6

COM

UO5

DO4

C3-4

DO3

DO2

C1-2

DO1

LON2

LON1

VA

V C

ON

TR

OLL

ER

ECHELON CONNECTOR

WHITE

BLUE

WHITEBLUE

SH

IELD

SH

IEL

D

ECHELON NETWORK CABLE

ECHELON NETWORK CABLE

TO E2 orOTHER ECHELONDEVICES

TO E2 orOTHER ECHELONDEVICES

EARTH GROUND

OUTPUTS (7)

RTU CONTROLLER

EC-RTU-L

1 2 3 4 5 6 7 8 9 10 11

UI1

CO

M

UI2

UI3

LON

1

LON

2

LONPORT

45678910

24V

AC

/DC

24V

CO

M

123

DO

1

DO

2

C2

C1

DO

3

DO

4

C4

C3

DO

5

UO

6

CO

MC5

UO

7

1112131415

CO

M

UI4

UI5

CO

M

UI6

ECHELON CONNECTOR

Echelon Wiring Echelon Network Wiring • 19

6.3.2. Using a Termination Block (P/N 535-2715) to Terminate a Daisy Chain

Some Echelon Network devices, notably TD3s, have no on-board means of terminating. For some other devices, it is inconvenient to use the jumpers supplied for termination (the CC-100/CS-100 case controllers, for example, require the enclosure to be removed to set the jumper).

To remedy these problems, Retail Solutions sup-plies termination blocks that can be wired to the end of an Echelon cable segment. This termination block uses the same three-pin connector as all other Eche-lon devices. Wire the two signal wires to the outside terminals, and connect the shield to the middle termi-nal (see Figure 6-4).

6.3.3. Maximum Total Segment Length

The total amount of wire used to connect all E2s and associated controllers in a single segment (not including devices on the other side of routers) cannot be longer than 4592 feet (1400 meters). If the total length of cable used is longer than 4592 feet, a repeater will be required.

Repeaters boost signal strength and are only used in instances where a segment of 63 nodes or less uses more than 4592 feet of Echelon cable.

Refer to the Router and Repeater Installation Guide (P/N 026-1605), for information about router and repeater placement.

Figure 6-3 - E2 Termination - Daisy Chain

NOTE: The recommended termination procedure for all Echelon devices is the termination block.

JP7

JP7

E2Termination

Figure 6-4 - Placement and Wiring of the Termination Block


7 Open Echelon Device Connectivity

The Rooftop and Single-duct VAV controllers use the Open Echelon connectivity manager to commu-nicate with the E2. E2s with Open Echelon devices must be ordered pre-configured from Retail Solu-tions. Open-Echelon licenses must be purchased and enabled on units, and are not transferable to other units without assistance from Retail Solutions. Call 770-425-2724 for technical assistance or your sales representative. Your sales representative will know to which devices your unit will connect.

7.1. Adding Rooftop and Sin-gle-duct VAV Controllers

Log into the controller and enter the desired num-ber of Echelon devices to be added in the Connected I/O screen. From the Main Menu:

1. Press (System Configuration)

2. Press (Network Setup)

3. Press (Connected I/O Boards and Con-trollers)

4. Navigate to the Open Echelon field under the Third Party Devices section of the Con-

nected I/O screen and enter the number of Echelon devices to be added (recommended maximum number of devices is 25).

7.2. Commissioning the Roof-top and Single-duct VAV Controllers

Next, you must commission the Echelon device. Commissioning is done at the Controller Setup screen. If still on the Connected I/O screen, hit the back button to go back to the Network setup menu

and press (Controller Setup). Or, from the Main Menu:

1. Press (System Configuration)

2. Press (Network Setup)

3. Press (Controller Setup)

Commission the device on the Connected I/O screen:

Highlight the “LonMark device” on the screen you wish to commission and press (SET ADDRESS). There are two methods available for commissioning: by pressing the device’s service pin, or by entering the device’s unique Neuron ID.

Figure 7-1 - Connected I/O Screen (RX-400 Unit Shown)

Figure 7-2 - Controller Setup Screen (BX-400 Unit Shown)

Adding Rooftop and Single-duct VAV Controllers Open Echelon Device Connectivity • 21

7.2.1. Service Pin CommissioningCommissioning by service pin involves pressing

the service pin button on the device, which sends the device’s Neuron ID to the E2. The service pin loca-tions for the Rooftop and Single-duct VAV control-lers are shown in Figure 7-3. The devices must be powered and networked before service pin commis-sioning.

After pressing (SET ADDRESS) on the Controller Setup screen (Figure 7-2) for the device you wish to commission:

1. From the Set Controller Address menu, select option 1 - Pressing Service Pin on Controller:

2. Enter a wait time in H:MM:SS. The Wait Time is the amount of time the E2 will listen for a service pin message on the network. Press when ready.

3. The E2 will show the message Press “Ser-vice Pin” or plug in Hand Held Terminal on device. Press and hold for 5 seconds the service pin on the Rooftop and Single-duct VAV controller you are commissioning.

4. If the E2 received the service pin message,

the E2 will complete the commissioning and binding process. You will see a progress bar on the screen as information is exchanged between the E2 and the Rooftop VAV or Sin-gle-duct VAV. If a service pin message was not received, an error message will be dis-played. Check the network connections and retry commissioning.

7.2.2. Neuron ID Entry Commission-ing

The Rooftop VAV and Single-duct VAV control-lers will have a sticker on the enclosure showing the unit’s unique 12-character Neuron ID. You may com-mission a device by entering the device’s Neuron ID from the E2 front panel.

1. From the Set Controller Address menu, select option 2 - Entering Neuron ID(s) directly:

2. In the Neuron ID field, enter the 12-character Neuron ID.

3. Press . If the E2 finds the device with the specified Neuron ID on the network, the E2 will complete the commissioning and binding process. You will see a progress bar on the screen as information is exchanged between the E2 and the Rooftop VAV or Sin-gle-duct VAV. If the device is not found, an error message will be displayed. Check the network connections and retry commission-ing.

7.2.3. TroubleshootingAfter commissioning has been completed, check

to make sure the device has been added successfully.

Figure 7-3 - Rooftop and Single-duct VAV Service Pin Locations

Figure 7-4 - Choose Service Pin Option

SERVICEPIN LOCATION

SERVICEPIN LOCATION

Figure 7-5 - Choose to Enter Neuron ID


From the Main Menu, select (Configured Appli-cations) to open the Configured Applications list. If the device you have commissioned does not appear in this list, the Description File has failed to upload correctly onto the E2. An alarm of No Description File will be generated and can be found in the Alarm Advisory Log.

Call Retail Solutions at 770-425-2724 to contact your sales representative or technical assistance to obtain the Description File. Refer to the E2 License Key and Open Echelon Installation Technical Bulle-tin P/N 026-4118 for more information about upload-ing Description Files.

NOTE: The system is not fully commis-sioned until each Single-duct VAV device has been balanced and calibrated. If

needed, an auto calibration can be programmed from the VAV Smart Thermostat, but all duct design needs to be programmed into the E2 (Sec-tion 8, E2 Setup for the Rooftop VAV Controller).

Commissioning the Rooftop and Single-duct VAV Controllers Open Echelon Device Connectivity • 23

8 E2 Setup for the Roof-top VAV Controller

In the E2 controller, go to the Rooftop VAV Status

screen. From the Main Menu, press , and select the desired LonMark device from the Configured Applications list and the status screen will open automatically.

8.1. Status ScreenThe E2 Rooftop VAV Status screen displays dif-

ferent inputs and outputs for the Rooftop VAV appli-cation:

8.1.1. InputsActive Setpoint is the parameter that the device is

using to maintain temperature. This value is the mid-point from the setpoints sent by the E2.

Duct Pressure, Fan Proof, Outdoor, Return, Sup-ply, and Mixed Temperatures values are sent from the Rooftop VAV to the E2. Those sensors reside locally on the Rooftop VAV.

Terminal Load is the required percentage of cooling or heating that a Single-duct VAV controller requires. With multiple Single-duct VAV controllers, the average is calculated in the E2.

For example, -100% = full heating, 0 = no heat-ing or cooling needed, 100% = full cooling.

For more information on Terminal Load calcula-tion, see Section 9, Terminal Load Calculation for Rooftop VAV Controller.

8.1.2. OutputsFan Enable, Cool 1 and 2, Heat 1 and 2, Econo-

mizer, and VFD values are physical outputs on the Rooftop VAV and they reside locally on the Rooftop VAV. Unit Mode is the state in which the unit is working. Possible Unit Mode states are:

• HVAC COOL

• HVAC HEAT

• HVAC MRNG WRMUP

• HVAC NIGHT PURGE

• HVAC PRECOOL

• HVAC OFF

• HVAC EMERG HEAT

8.2. General SetupUnder General setup, the Rooftop VAV applica-

tion Name can be set up. This is the only user-con-figurable parameter on this screen.

Figure 8-1 - Rooftop VAV Controller

Figure 8-2 - Rooftop VAV Status Screen


8.3. Setpoints SetupThe temperature and pressure setpoints are con-

figured from this screen:

The cooling and heating parameters (Min and Max Supply SP) for the supply temperature can be set from this screen.

8.4. Inputs SetupSet up all input information in the Inputs Setup

screen that is communicated between the E2 and Rooftop VAV.

When any input data points are set up, the Max-Receive parameter should be configured (Figure 10-11). Max-Receive is the maximum amount of time the device waits for information before reverting to its internal default values.

8.5. Outputs SetupSet up all output information in the Outputs Setup

screen that is communicated between the E2 and Rooftop VAV.

When input and output pointers are set up, the Max-send and Min-send parameters need to have values configured. These parameters are pre-config-ured (Figure 10-11).

Figure 8-3 - Rooftop VAV General Setup

Figure 8-4 - Rooftop VAV Setpoints Setup

Figure 8-5 - Rooftop VAV Inputs Setup

Figure 8-6 - Rooftop VAV Outputs Setup

Setpoints Setup E2 Setup for the Rooftop VAV Controller • 25

8.6. Averaging SetupThe E2 averages the Single-duct VAV controllers’

Terminal Load. This average should be connected to the Terminal Load input on the Rooftop VAV. Press to set up the Controller, Application, and Out-put information for the Rooftop VAV.

The Averaging parameters weight the terminal load.

8.7. Miscellaneous SetupSet up parameters such as heat and cool stages,

bypass time, damper position, fan speed and more from this screen:

8.8. Alarms SetupSet up values for alarming on this screen:

Static Pressure and CO2 alarms are available for user configuration. Static Pressure is an absolute value; CO2 uses an offset for the alarm. Alarm delay values are in seconds.

8.9. PID SetupPID settings are available on this screen for tem-

perature control and duct pressure for CO2 operation.

Figure 8-7 - Rooftop VAV Averaging Setup

Figure 8-8 - Rooftop VAV Miscellaneous Setup

Figure 8-9 - Rooftop VAV Alarms


8.10. Advanced Parameter Set-up

When an input pointer is set up on the Inputs tab, the Max-Receive parameter should be set up. Max-Receive is the maximum amount of time the device waits for information before reverting to its internal default values.

If the Max-Receive parameter is not set up, inputs are disabled. (The recommended setting is 600.) If a parameter is unused, enter zero (0) for the value.

Figure 8-10 - PID Setup for Rooftop VAV

Figure 8-11 - Rooftop VAV Setup for Advanced Parameters

Advanced Parameter Setup E2 Setup for the Rooftop VAV Controller • 27

9 Terminal Load Calcula-tion for Rooftop VAV Controller

The Rooftop VAV controller determines whether to provide heating or cooling based on the terminal load indicated by the Single-duct VAV controllers. Since each Single-duct controller has its own unique terminal load, all of the Single-duct terminal loads must be combined to determine the average terminal load of the system. An Analog Combiner application can be used to calculate the average system terminal load for the Rooftop VAV to use.

9.1. Analog Combiner Setup: Calculate Terminal Load

In the E2 controller, add an Analog Combiner application.

1. From the Main Menu, press 6. Add/De-lete Application and press 1. Add Ap-plication. Choose Analog Combiner and add the desired number.

2. Press Y to go directly to the Analog Ap-plication setup.

3. In General setup, edit the Analog Com-biner application by setting the Num In-puts parameter to the number of Single-duct VAVs served by the Rooftop VAV.

4. Set Eng Units to PCT.

5. Set Comb Method to AVERAGE (de-fault).

6. In Comb Ins setup (under the Comb Ins tab), connect the Analog Inputs to all of the associated VAV Terminal Load out-puts.

7. In Outputs setup (under the Outputs tab), connect the OUTPUT to the Terminal Load input on the Rooftop VAV applica-tion.

Figure 9-1 - Analog Combiner General Setup Screen

NOTE: The Analog Combiner can read up to 16 inputs, so up to 16 VAV units may be supported by a single Analog Com-

biner.


10 E2 Setup for the Single-duct VAV Controller

In the E2 controller, go to the Single-duct VAV

Status screen. From the Main Menu, press , and select the desired LonMark device from the Config-ured Applications list and the status screen will open automatically.

10.1. Status ScreenThe E2 Single-duct VAV Status screen displays

selected inputs and outputs for the VAV application:

10.1.1. InputsActive and Flow setpoints are the parameters the

Single-duct VAV controller uses for control. These values are provided from setpoints sent to the Single-duct VAV by the E2.

The Space Temp value is the temperature as read from the VAV Smart Thermostat. The HW Inputs are the local physical temperature inputs.

10.1.2. OutputsOutputs are read-only feedback information

received from the Single-duct VAV controller.

Press for General setup.

10.2. General SetupUnder General setup, set the Single-duct VAV

application Name. This is the only user-configurable parameter on this screen.

10.3. Temperature Setpoint Setup

All temperature and flow setpoints are user-con-figured from this screen, including the CO2 Set-point. For CO2 operation, the sensor reading must come from the E2.

Figure 10-1 - Single-duct VAV and VAV Smart Thermostat

Figure 10-2 - Single-duct VAV Status Screen in E2

Figure 10-3 - Single-duct VAV General Setup

Status Screen E2 Setup for the Single-duct VAV Controller • 29

10.4. Inputs SetupSet up all inputs desired to be communicated from

the E2 to the Single-duct VAV from the Inputs setup screen.

When any input data points are set up, the Max-Receive parameters should be configured (Figure 10-11). Inputs are disabled if the Max-Receive parameters are left unconfigured. If a parameter is unused, enter zero (0) for the value.

Max-Receive is the maximum amount of time the device waits for information before reverting to its internal default values.

10.5. Outputs SetupAll outputs represent status information commu-

nicated from the Single-duct VAV to the E2. These outputs may be optionally connected to other appli-cations in the E2.

When any outputs are set up, the Max-Send and Min-Send parameters should be configured with a value (Figure 10-12). Outputs are disabled if the Max-Send and Min-Send parameters are left uncon-figured. If a parameter is unused, enter zero (0) for the value.

Terminal Load is the output that provides mode of operation to the Rooftop VAV controller. The E2 must be configured to calculate the Terminal Load Average of multiple Single-duct VAV controllers. For more information on Terminal Load calculation, see Section 9, Terminal Load Calculation for Rooftop VAV Controller.

10.6. Device SetupSet up the Single-duct VAV controller from this

screen by configuring Device Setup parameters such as duct cross-sectional area, gain, passwords, damper control, and more.

Figure 10-4 - Single-duct VAV Temperature Setpoint Setup

Figure 10-5 - Single-duct VAV Inputs Setup

Figure 10-6 - Outputs Setup


10.7. PID SetupPID settings are available on this screen for tem-

perature control and duct pressure for CO2 operation.

10.8. Alarm SetupAlarm parameters can be set for temperature,

flow, and CO2 configuration. Both temperature and flow work as an offset alarm.

If temperature or flow readings are higher or lower than the active setpoint’s maximum or mini-mum offset, an alarm is generated.

CO2 Limit is an absolute value. If the value exceeds the limit, an alarm is generated. Alarm delays are set in seconds.

Figure 10-7 -Device Setup

Figure 10-8 - PID Setup for Single-duct VAV

Figure 10-9 - Alarm Setup

PID Setup E2 Setup for the Single-duct VAV Controller • 31

10.9. Override SetupThe damper override is a read-only output value

from the Single-duct VAV device and is therefore not configurable from the Status screen. Configure the damper override from the Override Setup screen:

From the STATE OVR parameter, press for the look up list and select HVO_Position.

Set the override percentage value in the PER-CENT OVR field.

To revert back to default or normal control, change STATE OVR back to HVO_OFF.

10.10. Advanced SetupWhen any input data points are set up, (Figure

10-5) the Max-Receive parameters should be config-ured.

Max-Receive is the maximum amount of time the Single-duct VAV controller will wait to receive infor-mation from the E2 before reverting to its own inter-nal default values.

Inputs are disabled if the Max-Receive parame-ters are left unconfigured. (The recommended setting is 600.) If a parameter is unused, enter zero (0) for the value.

10.10.1. Max-Send Parameter SetupWhen any output data points are set up, (Figure

10-5) the Max-Send parameters should be config-ured.

Max-Send is the maximum amount of time the device will wait before sending status information to the E2. This information will be sent even if it hasn't changed since the last update.

Figure 10-10 - Override Setup

Figure 10-11 - Advanced Setup


10.10.2. Min-Send Parameter SetupWhen any output data points are set up, (Figure

10-6) the Min-Send parameters should be config-ured.

Min-Send is the minimum amount of time the device will wait before it sends status information to the E2. This setting acts as a throttle to prevent rap-idly changing status information from flooding the Echelon network. This parameter can be used to slow down network traffic.

Figure 10-12 - Max-Send Parameter Setup - Advanced

Figure 10-13 - Min-Send Parameter Setup - Advanced

Advanced Setup E2 Setup for the Single-duct VAV Controller • 33

11 VAV Smart Thermostat Programming

The VAV Smart Thermostat has a built-in therm-istor for temperature sensing, a two-line / eight-char-acter LCD display and five push buttons. The VAV Smart Thermostat measures the room temperature every 5 seconds, updates the value displayed on the LCD, and sends the temperature to the controller.

The VAV Smart Thermostat has a regular user mode for building occupants and a password-pro-tected configuration mode that consists of a main configuration menu and three submenus (I/O display mode, flow configuration mode, and flow calibration mode). The menu hierarchy and the options available in each menu and submenu are illustrated in Figure 11-2.

Figure 11-1 - VAV Smart Thermostat


11.1. Menu Hierarchy

Figure 11-2 - VAV Smart Thermostat Screen Hierarchy

Enter a Submenu

Enter Password

User Mode

Configuration Mode

Flow Configuration Submenu

Flow Calibration SubmenuI/O State Submenu

Sensor Initialization and Error StatusRoom Temperature DisplaySetpoint AdjustmentHVAC Mode and Effective Setpoint

Occupancy Status

Outdoor Air TemperatureVAV Wink

Enter Flow Configuration Submenu

Toggle Units (SI / Imperial)Send Service Pin

Enter Flow Calibration Submenu

Enter I/O State Submenu

Toggle VAV / WT Mode

Minimum FlowMaximum FlowMin Heat FlowNominal FlowDamper Drive TimeToggle Clockwise / Counterclockwise

Pitot Factor

Duct Area

Flow ReadingReturn to Normal OperationGo to Min FlowGo to Max FlowSet Damper PositionView Damper PositionDifferential PressureCalibrate to Low ValueCalibrate to High ValueCalibrate to Minimum Flow

Perform Auto CalibrationCalibration Code

Input 1 ValueInput 2 ValueInput 3 ValueInput 4 ValueOutput 1 ValueOutput 2 ValueOutput 3 Value

Terminal Load

Output 4 ValueOutput 5 ValueOutput 6 Value

Calibrate to Maximum Flow

Temperature Calibration (Offset)

Menu Hierarchy VAV Smart Thermostat Programming • 35

11.2. Button Operation

11.2.1. OverviewThe VAV Smart Thermostat has five push buttons

that are scanned every 100ms to determine if a button has been pressed. You can perform a simple press-and-release of a button to scroll through menu items or to change displayed values one at a time. Alterna-tively, you can hold down a button to simulate repeated button presses, which is convenient when making changes to setpoints, adjusting the damper position, and more.

11.2.2. TimeoutsThe VAV Smart Thermostat has a 5-second time-

out in the regular user mode. The 5-second timer begins after each button release. Once it times out, it returns to the default display screen that typically dis-plays the room temperature. The VAV Smart Ther-mostat has a 20-minute timeout in the password configuration mode. This longer timer provides suffi-cient time for an air balancing technician to perform various air balancing tasks, take readings, and enter data without timing out of the configuration mode.

11.2.3. Sampling RateThe VAV Smart Thermostat stops sampling the

room temperature while buttons are being pressed. The VAV Smart Thermostat waits five (5) seconds after the last button press to resume temperature sam-pling. In the configuration mode, even though the LCD screen does not timeout and return to the default temperature display screen for 20 minutes, it will begin sampling the temperature and sending the value to the controller five (5) seconds after the last button press.

11.3. Startup and ErrorsNormally, the first time that the VAV Smart Ther-

mostat is powered up (for example, connected to a Single-duct VAV from which it draws power), the text SENSOR INIT... will appear on the LCD. The VAV Smart Thermostat will also show this text after any power cycle of the Single-duct VAV signifying that it is able to communicate with the Single-duct VAV and that it is being initialized.

If there is a loss of communication between the VAV Smart Thermostat and the Single-duct VAV dur-ing regular operation, or if communication cannot be established on power-up, the text SENSOR COM FAIL will appear on the LCD. The VAV Smart Ther-mostat will periodically attempt to reestablish com-munication with the Single-duct VAV and display the text SENSOR RETRY! If communication cannot be established, the LCD will alternate between these two messages.

Figure 11-3 - VAV Smart Thermostat Buttons

NOTE: If you encounter a communication problem, examine the wiring between the VAV Smart Thermostat and Single-duct

VAV. Verify that the wires are properly inserted into the wire terminals and that you have not ex-ceeded a wire length of 15 meters (50 feet). If the problem is not wiring related, connect another VAV Smart Thermostat to the Single-duct VAV to determine if the problem is with the original VAV Smart Thermostat or the Single-duct VAV, and contact Retail Solutions (770-425-2724) for RMA information.


11.4. User ModeThe User Mode is meant to be accessible by

building occupants so that they can view tempera-tures, adjust the setpoint, and initiate an override. By default, the VAV Smart Thermostat will display the room temperature.

11.4.1. Button Functionality in User Mode

11.4.2. LCD Text Definitions in User Mode

11.4.2.1. RoomTemp - Read Only

Displays the current room temperature and updates its value every 5 seconds. The room temper-

ature is the default display screen for the VAV Smart Thermostat.

(The temperature is read from the onboard tem-perature sensor and written to nvoSpaceTemp SI Units: °C / US Units: °F).

11.4.2.2. Setpoint - Read-Only

Displays the current midrange setpoint. The mid-range setpoint is the median value between the heat-ing and cooling setpoints. Figure 11-4 illustrates the relation between the midrange setpoint and the heat-ing/cooling setpoints. In this example, the range between the heating and cooling setpoints is 2ºC and the midrange setpoint is 21ºC.

If the HVAC mode is in cooling, the effective set-point (i.e., the actual setpoint) will be the cooling set-point. Similarly, if the HVAC mode is in heating, the effective setpoint will be the heating setpoint.

If the Single-duct VAV has been set up for single room control, only then will the setpoint that was entered using the VAV Smart Thermostat (when in Occupied, Bypass or Standby Modes) is written to nvoEffectSetpt; however, nvoEffectSetpt will equal nviSetpoint if nviSetpoint has been assigned a value.

11.4.2.3. Cooling - Read-Only

If the HVAC is in Cooling Mode, the VAV Smart Thermostat will display the text Cooling followed by the cooling setpoint, which is the effective setpoint at the time.

(The HVAC mode is read from nvoUnitStatus.)

11.4.2.4. Heating - Read-Only

If the HVAC is in Heating Mode, the VAV Smart Thermostat will display the text Heating followed by the heating setpoint, which is the effective setpoint at the time.

(The HVAC mode is read from nvoUnitStatus.)

Button User-Mode Function

Sub Menu is not used in User Mode

Next is used to view the next available menu option

Override is used to put the Single-duct VAV into Override Mode. The occupancy

state will change temporarily to BYPASS.

The down arrow is used to view and decrease the setpoint. Pressing the but-ton once will display the setpoint. Press-

ing it a second time will decrease the temperature by 0.5 degrees. Holding down the button will decrement the

value continuously until you release the button or until the lower limit is reached (Permanent changes should be made

from the E2 controller as they will over-ride setpoints in the thermostat).

The up arrow is used to view and increase the setpoint. Pressing the but-ton once will display the setpoint. Press-

ing it a second time will increase the temperature by 0.5 degrees. Holding

down the button will increment the value continuously until you release the button

or until the upper limit is reached.

Table 11-1 - Button Functionality in User Mode

Figure 11-4 - Midrange, Heating, and Cooling Setpoints

HeatingSetpoint

MidrangeSetpoint

CoolingSetpoint

20 C 21 C 22 C

User Mode VAV Smart Thermostat Programming • 37

11.4.2.5. OccState - Read-Only

Shows the current occupancy status.

(The occupancy state is read from nvoOccState.)

11.4.2.6. Override - Read-Only

The VAV Smart Thermostat will display the text Override when the Override button is pressed, and nvoOccState will be set to OC_BYPASS.

(The controller will remain in bypass mode for the time period specified in SCPTbypassTime.)

11.4.2.7. OutdoorTemp - Read-Only

The outdoor temperature is only displayed if you have bound nviOutdoorTemp to a controller that can provide an outdoor temperature reading (SI Units: °C / US Units: °F).

11.5. Configuration Mode - Password Protected

The VAV Smart Thermostat Configuration Mode is protected by a password and is hidden from build-ing occupants. The configuration mode provides building personnel with monitoring and air balancing options as illustrated in Figure 11-2.

11.5.1. Button Functionality in Con-figuration Modes

11.5.2. Entering Configuration ModeTo access the password-protected Configuration

Mode:

1. Hold the and the but-tons simultaneously for approximately 10 seconds. Release the buttons when you see the display screen text change to Login 5000.

2. Use the arrow keys to increase or de-crease the displayed number until it matches your configured password. By default, the password is 5001.

Button Configuration Mode Function

Sub Menu is used to access three avail-able submenus when the VAV Smart

Thermostat displays the text Submenu that indicates it is possible to access a

specific submenu.

Sub Menu is also used to exit the config-uration mode submenus and return you to the specific configuration mode sub-

menu link that was chosen.

When pressed simultaneously with Next, it exits the screen you are on and returns you to User Mode, RoomTemp

screen.

Next is used to view the next available menu option.

When pressed simultaneously with Sub Menu, it exits the screen you are on and returns you to User Mode, RoomTemp

screen.

Override is used as an “Enter” key on a keyboard. When you press this button, the value you have specified is sent to

the controller.

The down arrow decreases the dis-played parameter value.

The up arrow increases the displayed parameter value.

Table 11-2 - Button Functionality in Configuration Modes


If you have previously changed the password and do not remember it, examine the value of ComPass-word in the E2 controller under the Setup tab in the VAV application.

3. Press the button to submit the password that you entered.

If you have entered the correct password, the VAV Smart Thermostat will be in the Service Pin screen and display Srvc Pin. If you have entered an incor-rect password, the VAV Smart Thermostat will dis-play the text: Password Failed.

11.5.3. Exiting Configuration ModeThe VAV Smart Thermostat will automatically

exit the configuration mode 20 minutes after the last button press.

To exit the Configuration Mode and Submenus

manually, hold the and the buttons simultaneously for approximately 10 seconds. This will take you back to User Mode on the RoomTemp screen.

11.5.4. LCD Text Definitions for Con-figuration Mode

11.5.4.1. Srvc Pin - Editable

This menu is used to send a service pin message over the network. Setting the value to 1 and pressing

the button is equivalent to pressing the ser-

vice pin button on the controller.

For more information on commissioning, see Sec-tion 7.2., Commissioning the Rooftop and Single-duct VAV Controllers.

11.5.4.2. SI Units - Editable

This menu is used to specify the display units for temperature values. Setting the value to 0 will cause the VAV Smart Thermostat to display temperatures in

US units (°F & CFM). Setting the value to 1 will cause the VAV Smart Thermostat to display SI units (°C & LPS).

(The value is written to the SmartSensorInSI field of UCPTvavOptions.)

11.5.4.3. Temp Cal - Editable

This menu is used to calibrate the temperature sensor. The arrow buttons can be used to increment or decrement the temperature calibration offset value by 0.1° per button press. The offset can be up to +/- 12.7°C or +/- 22.8°F.

(The value is written to UCPTcomInputCfg.Off-set (SI Units: ºC / US Units: ºF)

11.5.4.4. IO State Submenu - Submenu Link

Pressing the button while you are in this menu will take you to the I/O State Configuration submenu (Section 11.5.5., I/O State Configuration Submenu - Display Text Definitions).

11.5.4.5. VAV Mode - Editable

This menu is used to specify whether you are using a VAV or VVT controller. This menu can also be used to put a VAV controller into VVT mode.

Setting the value to 0 will put the controller into VVT mode. Setting the value to 1 will put the con-troller into VAV mode.

( The value is written to the VVTmode field of the UCPTvavOptions.)

11.5.4.6. Flow Cfg Submenu - Submenu Link

Pressing the button while you are in this menu will take you to the flow configuration sub-menu (Section 11.5.6., Flow Configuration Sub-menu).

11.5.4.7. Flow Cal Submenu - Submenu Link

Pressing the button while you are in this menu will take you to the flow calibration submenu (Section 11.5.7., Flow Calibration Submenu).

NOTE: I/O State, Flow Configuration, and Flow Calibration Submenus are accessed from special submenu links in the main

Configuration Mode (Section 11.5.2., Entering Configuration Mode).

Configuration Mode - Password Protected VAV Smart Thermostat Programming • 39

11.5.5. I/O State Configuration Sub-menu - Display Text Defini-tions

11.5.5.1. Trm Load - Read-Only

Displays the controller’s terminal load. The termi-nal load value is read from nvoTerminalLoad.

11.5.5.2. Input N - Read-Only

Displays the value of hardware input N (where N is between 1 and 4).

(The value is read from nvoHwInputN where N is between 1 and 4).

11.5.5.3. Output N - Read-Only

Displays the value of hardware output N (where N is between 1 and 6). The value is read from the out-put value.

All values displayed in the I/O submenu are updated every 3 seconds.

To exit the I/O State Configuration Menu, press

the button.

11.5.6. Flow Configuration Submenu

11.5.6.1. Min Flow - Editable

The minimum airflow that is to be maintained by the Single-duct VAV controller during normal opera-tion. The flow setpoint only falls below the Mini-mum Flow if the Use zero flow as min flow while Unoccupied option is selected or if the flow setpoint is overridden.

Setting the Minimum Flow to zero means the damper can be fully closed in which case no fresh air will be supplied to the zone that the Single-duct VAV controls.

(The value entered in this field is written to SCPTminFlow. SI Units: LPS / US Units: CFM)

11.5.6.2. Max Flow - Editable

The maximum allowable airflow. The flow set-point never exceeds this value unless overridden.

(The value entered in this field is written to SCPTmaxFlow. SI Units: LPS / US Units: CFM)

11.5.6.3. MinFlwHt - Editable

The minimum airflow that is to be maintained by the Single-duct VAV when duct heating is turned ON unless it is overridden. The Minimum Flow Heat option is provided to allow a higher minimum air-flow which is sometimes required for duct heaters. If this flow value is not met, the duct heater will not turn ON.

(The value entered in this field is written to SCPTminFlowHeat. SI Units: LPS / US Units: CFM)

11.5.6.4. Nom Flow - Editable

The expected airflow when the damper is fully open. The nominal flow is used during precalibra-tion. It is also used to determine the next damper movement. If you do not know the nominal flow you can leave it at zero.

(The value entered in this field is written to SCPTnomAirFlow.)

11.5.6.5. DmpDrTm - Editable

Used to specify the time that the damper will take to go from the fully closed position to the fully open position or vice-versa. Used only for built-in actua-tor. The damper drive time can be set to between 45 seconds and 150 seconds; however, it is recom-mended to use the default value of 95 seconds.

(The value entered in this field is written to UCPTdamperDriveTime.)

11.5.6.6. Open CCW - Editable

Used to specify the direction (clockwise or coun-ter clockwise) in which the actuator rotates to open the damper. Set the value to 0 for clockwise or 1 for counter clockwise.

(A binary value representing the damper direction is written to the Damper CCW field of UCPT-vavOptions.)

11.5.6.7. Area - Editable

This value is important only to perform a precali-bration of the Single-duct VAVcontroller, without using a reference instrument.

(The value entered in this field is written to SCPTductArea. SI Units: cm2 / US Units: in2)


11.5.6.8. PitotFct - Editable

A divider that is applied to the differential pres-sure reading. The Pitot Factor compensates for vary-ing characteristics and flow effects in Single-duct VAV box equipment and pickup probes. It is recom-mended that you enter the Pitot Factor along with the Duct Area to ensure precise precalibration. Contact Retail Solutions (770-425-2724) for the Pitot Factor value if you do not have it.

(The value entered in this field is written to SCPTGainVAV.)

To exit the Flow Configuration Submenu, press

the button and it will return you to the Con-figuration Mode Section 11.5., Configuration Mode - Password Protected.

11.5.7. Flow Calibration Submenu

11.5.7.1. Flow - Read-Only

The real-time air flow that is being supplied to the zone. The flow reading will only be available if the Single-duct VAV has been calibrated.

(The flow value is read from nvoAirFlow. SI Units: LPS / US Units: CFM)

11.5.7.2. RunNrmOp - Editable

Terminates calibration mode and puts the Single-duct VAV controller back into normal operation. Cal-ibration Mode is activated as soon as you send a command from the flow calibration submenu, and ends automatically when the VAV Smart Thermostat returns to User Mode, or the RunNrmOp command is sent to the Single-duct VAV. While the controller is in Calibration Mode it will not respond to control demands.

11.5.7.3. GotoMinF - Editable

Only use this command if the Single-duct VAV is already calibrated. When this command is activated, the Single-duct VAV automatically maintains the minimum flow that was specified in the Min Flow screen of the Flow Configuration Submenu, (Section 11.5.6.) by adjusting the damper position. The Sin-gle-duct VAV will dynamically compensate for changes in air pressure to ensure that the minimum airflow is maintained. The Single-duct VAV will con-tinue to maintain the minimum airflow until the

RunNrmOp command is sent to the Single-duct VAV or you exit the password protected menu and return to the User Mode.

11.5.7.4. GotoMaxF - Editable

Only use this command if the Single-duct VAV is already calibrated. When this command is activated, the Single-duct VAV automatically maintains the maximum flow that was specified in the Max Flow screen of the Flow Configuration Submenu, (Section 11.5.6.) by adjusting the damper position. The Sin-gle-duct VAV will dynamically compensate for changes in air pressure to ensure that the maximum airflow is maintained.

The Single-duct VAV will continue to maintain the minimum airflow until the RunNrmOp com-mand is sent to the Single-duct VAV, or you exit the password protected menu and return to the User Mode.

11.5.7.5. Dmp Cmd - Editable

Moves the damper to the position that you specify in this screen. The damper can open between 0% (fully closed) and 100% (fully open).

The damper will remain at the position you spec-ify until the RunNrmOp command is sent to the Sin-gle-duct VAV or you exit the password protected menu and return to the user mode.

11.5.7.6. Dmp Pos - Read-Only

Displays the current damper position (in %).

11.5.7.7. DifPress - Read-Only

Displays the current differential pressure reading. (SI Units: PA / US Units: WC)

11.5.7.8. CalLoVal - Editable

When you use this option, you can calibrate the Single-duct VAV based on an airflow that is close to the minimum flow that was specified in the Min Flow screen of the Flow Configuration Submenu (Section 11.5.6.) sent by the E2 controller. Adjust the damper until your flow hood (capture hood) reading is close to the minimum flow. Enter the flow hood

reading and press the button. This is faster than making micro adjustments to the damper as required when using the CalToMin option (refer to

Configuration Mode - Password Protected VAV Smart Thermostat Programming • 41

Figure 11-5).

11.5.7.9. CalHiVal - Editable

When you use this option, you can calibrate the Single-duct VAV based on an airflow that is close to the maximum flow that was specified in the Max Flow screen of the Flow Configuration Submenu (Section 11.5.6.) sent by the E2 controller. Adjust the damper until your flow hood reading is close to the maximum flow. Enter the flow hood reading then

press the button. This is faster than making

micro adjustments to the damper as required when using the CalToMax option (refer to Figure 11-5).

11.5.7.10. High and Low Manual Calibra-tion Example

11.5.7.11. CalToMin - Editable

When you use this option, you can calibrate the Single-duct VAV to the exact airflow that was speci-fied in the Min Flow screen of the Flow Configura-tion Submenu (Section 11.5.6.) sent by the E2 controller.

Adjust the damper until your flow hood reading is equal to the minimum flow, change the

on-screen value from 0 to 1 then press the

button.

11.5.7.12. CalToMax - Editable

When you use this option, you can calibrate the Single-duct VAV to the exact airflow that was speci-fied in the Max Flow screen of the Flow Configura-tion Submenu (Section 11.5.6.) sent by the E2

controller.

Adjust the damper until your flow hood reading is equal to the maximum flow, change the on-screen

value from 0 to 1, then press the button.

11.5.7.13. DoAutoCal - Editable

The Pitot Factor and duct area must be entered in the E2 in order for automatic calibration to be used.

Pitot Factor and duct area are used to calibrate a curve that defines the relationship between the air-flow and differential pressure. The calibration is ins-taneous.

11.5.7.14. NOT CALIBRAT - Read Only

Displayed if the Single-duct VAV has not been calibrated; however, if the Single-duct VAV has been calibrated it will show the calibration code that is stored in nviCalibCode.

To exit the Flow Calibration Submenu, press the

button and it will return you to the Configu-ration Mode Section 11.5., Configuration Mode - Password Protected.

Figure 11-5 - High and Low Manual Calibration Example

NOTE: All Read-Only values are updated every 3 seconds. The values that can be changed by the VAV Smart Thermostat are

read directly from the device in the Single-duct VAV Device Configuration window.


12 Hardware Specifications

12.1. Rooftop VAV Controller

Rooftop VAV Specifications

Power Voltage: 24VAC; ±15%, 50/60HZ, Class 2

Protection: 1.35A auto-reset feature

Typical Consumption: 6VA

Maximum Consumption: 15VA

Environmental Operating Temperature: 32°F to 158°F (0°C to 70°C)

Storage Humidity: -4°F to 158°F (-20°C to 70°C)

Relative Humidity: 0 to 90% non-condensing

General Standard: LonMark functional profile: Roof-top unit controller #8030

Processor: Neuron® 3150® 8 bits; 10MHZ

Memory: Non-volatile flash 64K (APB application & configuration properties)

Communication: LonTalk protocol

Transceiver: FT-X1

Channel: TP/FT-10; 78Kbps

Status Indicator: Green LED: power status & LON TX, Orange LED: service and LON TX

Communication Jack: LON audio jack mono 1/8” (3.5 mm)

Enclosure Material: ABS PA-765A

Color: Blue casing & gray connectors

Dimensions w/ screws: 5.7 x 4.7 x 2.0” (144.8 x 119.4 x 50.8 mm)

Shipping weight: 0.77lbs (0.35kg)

Installation: Direct din-rail mounting or wall mounting through mounting holes (see Figure 2-5)

Table 12-1 - Rooftop VAV Hardware Specifications

Rooftop VAV Controller Hardware Specifications • 43

Inputs Quantity: 6 (pre-configured)

Input Types: Universal (pre-configured) -Voltage: 0-10VDC, Accuracy ±0.5% -Current: 4-20mA with 249Ω external resistor (wired in parallel), accuracy ±0.5% -Digital: Dry contact -Resistor: Thermistor: Type: 2, 3 10KΩ Accuracy: ±0.9°F; (±0.5°C) Range: -40°F to 257°F; (-40°C to 125°C) Resolution: 0.18°F; (0.1°C) Potentiometer: Translation table configurable on several points Accuracy: ±0.5%

Input Resolution: 12-bit analog / digital converter

Outputs Quantity: 7 (pre-configured)

5 Digital: Triac 1.0A @ 24VAC External power supply

2 Universal: 0-10VDC (linear), digital 0-12VDC (on/off) or PWM PWM output; adjustable period from 2 seconds to 15 minutes 60mA max. @ 12VDC (140°F; 60°C) Maximum load 200Ω Auto-reset fuse: 60mA @ 140°F; 60°C 100mA @ 68°F; 20°C

Agency Approvals

UL Listed (CDN & US): UL916 Energy management equipment FCC: This device complies with FCC rules part 15, subpart B, class B

Rooftop VAV Specifications

Table 12-1 - Rooftop VAV Hardware Specifications


12.2. Single-duct VAV Control-ler

Single-duct VAV Specifications

Inputs Quantity: 4 universal (pre-configured)

Input Types -Digital: Dry contact -Analog Voltage: 0-10VDC, Accuracy ±0.5% -Analog Current: 4-20mA with 249Ω external resistor Accuracy ±0.5% -Resistor Support: Thermistor: 100KΩ (PT100) 1KΩ (RTD 1K Type 85), 10KΩ (Type 2,3) Range: -40°F to 302°F; (-40°C to 125°C) Accuracy: ±0.9°F; (±0.5°C) Resolution: 0.18°F; (0.1°C) (10KΩ to 100KΩ supported using translation table) Potentiometer: Linear 2-point setpoint adjustment Min/Max linear configuration

Differential: Range: 0-250 Pa (0-1” H20)

Pressure Sensor: Resolution: 0.04 milli-inches H20

(Single-duct VAV model only): Accuracy ±0.3% full scale

Input Resolution: 16-bit analog / digital converter

Outputs Quantity: 6 Hardware (pre-configured)

4 Digital: Triac 0.75Amp @ 24VAC External or internal power supply

2 Universal: 0-10VDC linear, digital 0-12VDC(Analog / Digital) or PWM, 20mA max maximum load 600Ω

Output Resolution: 10 bits digital / analog converter

Power Voltage: 24VAC; ±15%, 50/60HZ, Class 2Protection: 3.0A removable fuse for triac when using the internal power supplyTypical Consumption: 18VA; Triac outputs (2 valves @ 4VA) and 2 outputs with 20mA load @12VDCMaximum Consumption: 10VA (normal) or 85VA if internal power supply is used for triac (special application)

Table 12-2 - Single-duct VAV Hardware Specifications

Single-duct VAV Controller Hardware Specifications • 45

12.3. VAV Smart Thermostat

Environmen-tal

Operating Temperature: 32°F to 158°F (0°C to 70°C)Storage Humidity: -4°F to 158°F (-20°C to 70°C)Relative Humidity: 0 to 90% non-condensing

Agency Approvals

UL Listed (CDN & US): UL916 Energy management equipment FCC: This device complies with FCC rules part 15, subpart B, class B

VAV Smart Thermostat Specifications

General CPU: PIC16C622Power Source: Externally powered 12VDCLCD Display: 2 Lines, 8 CharactersSensor: 10K NTC Thermistor Range: 0°C to 70°C; 32°F to 158°F Accuracy: ±0.2°F; ±0.36°F Resolution: ±0.1°C; ±0.18°F

Communica-tions

2400 baud serial communication over 2-wire interface.Half duplex, 8-bit, no parity, 1 stop bit.Protocol based on EIA-232.Wiring: 50 feet max. (15 meters max.), 22 AWG unshielded, twisted pair stranded cable

Environmen-tal

Operating Temperature: 0°C to 70°C; 32°F to 158°FStorage Temperature: -20°C to 70°C; -4F to 158°F Relative Humidity: 0 to 90% Non-condensing

Enclosure Material: ABS resinColor: Off-whiteDimensions: 4.94” x 3.38” x 1.28” (124 x 85 x 32.5 mm)Shipping weight: 0.4 lbs (0.18 kg)

Agency Approvals

UL Listed: UL873 Temperature Indicating & Regulating Equipment (pending) FCC: FCC part 15, subpart B, class B

Table 12-3 - VAV Smart Thermostat Hardware Specifications

Single-duct VAV Specifications

Table 12-2 - Single-duct VAV Hardware Specifications


Index

-A-Adding VAV Controllers in E2 21Analog Combiner Setup 28-C-Calibration 42Commissioning 21

Neuron ID Entry 22Service Pin 22Troubleshooting 22

Configuration Mode 38Entering 38Exiting 39

Connectivity 21-E-E2 Analog Combiner Setup 28E2 Controller Setup

Rooftop controller 24advanced parameter setup 27alarms setup 26averaging setup 26general setup 24inputs setup 25miscellaneous setup 26outputs setup 25PID setup 26setpoints setup 25status screen 24

Single-duct VAV Controller 29advanced setup 32alarm setup 31device setup 30general setup 29inputs setup 30max-send parameters setup 32min-send parameter setup 33outputs setup 30override setup 32PID setup 31status screen 29temperature setpoint 29

Echelon Device Connectivity 21Echelon Network

Daisy-chaining 18Maximum Number of Nodes 19Termination Block Installation 20Wire Length Limitations 20Wiring 18Wiring Type 18

-F-Flow Calibration 41Flow Configuration 40-H-Hardware Specifications 43

Rooftop Controller 43Single-duct VAV Controller 45Thermostat 46

-IInput Configuration (Rooftop Unit) 10Input Configuration (Single-duct VAV Control-ler) 12Input Wiring 10Input Wiring (Rooftop unit) 11Input Wiring (Single-duct VAV Controller) 12Inputs 10-L-LonMark Device 21-M-Manual Calibration 42Mounting 5Mounting Conditions 6Mounting Steps 7-N-No Description File 23-O-Open Echelon 21Output Configuration (Rooftop unit) 15Output Configuration (Single-duct VAV Con-troller) 17Output Wiring 15Output Wiring (Single-duct VAV Controller) 16Outputs 15-P-Powering 8Programming

Smart Thermostat 34-R-Replacement Parts 14Rooftop Controller

Index • I-47

Terminal Load Calculation 28Rooftop unit 2-S-Sensor 3Single-duct VAV Controller 2Smart Thermostat

Button Operation 36Startup and Errors 36Timeouts 36

Smart Thermostat Programming 34-T-Terminal Load Calculation 28

Analog Combiner 28Termination 19

Block 20Termination Block 20Thermostat 3Thermostat LCD Screens

Area 40CalHiVal 41CalLoVal 41CalToMax 42CalToMin 42Cooling 38DifPress 41Dmp Cmd 41Dmp Pos 41DmpDrTm 40DoAutoCal 42Flow 41Flow Cal Submenu 39Flow Cfg Submenu 39GotoMaxF 41GotoMinF 41Heating 38Input "N" 40IO State Submenu 39Max Flow 40Min Flow 40MinFlwHt 40Nom Flow 40NOT CALIBRAT 42OccState 38OpenCCW 40OutdoorTemp 38Output "N" 40

Override 38PitotFct 40Room Temp 37RunNrmOp 41Setpoint 37SI Units 39SrvcPin 39Temp Cal 39Trm Load 40VAV Mode 39

Thermostat Programming 34Thermostat Wiring 13Transformers 8Troubleshooting

Thermostat 14-U-User Mode 37-V-VAV Controller 2-W-Wire Gauge Formula 9Wire Types 9

Echelon Network 18

I-48 • VAV Control Network I&O Manual 026-1200 Rev 1 06-APR-2010

vav control network installation and operation manual · 2 • vav control network i&o manual...

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